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Bhandary B, Lee HY, Back HI, Park SH, Kim MG, Kwon JW, Song JY, Lee HK, Kim HR, Chae SW, Chae HJ. Immature Rubus coreanus Shows a Free Radical-Scavenging Effect and Inhibits Cholesterol Synthesis and Secretion in Liver Cells. Indian J Pharm Sci 2013; 74:211-6. [PMID: 23440938 PMCID: PMC3574530 DOI: 10.4103/0250-474x.106062] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 05/16/2012] [Accepted: 05/20/2012] [Indexed: 11/12/2022] Open
Abstract
Rubus coreanus fruits have been employed as a traditional medicine for centuries in the Asia-Pacific region. Its pharmacological action differs according to the different extraction methods utilized and the degree of fruit ripening. In this study, we determined the cellular effect of different ethanol extracts of mature and immature Rubus coreanus fruits in human hepatic cell line, HepG2 cells. The antioxidant activity, effect on superoxide dismutase activity and cholesterol biosynthesis efficiency was also evaluated. Immature Rubus coreanus extract showed higher antioxidant capability, compared with that of its mature fractions. Cellular antioxidant proteins including HO-1, Cu/Zn-superoxide dismutase and catalase were highly expressed in the presence of Rubus coreanus. Cholesterol levels in HepG2 cells treated with the water fraction of immature Rubus coreanus were significantly reduced. This antihyperlipidaemic action of Rubus coreanus is a consequence of cholesterol biosynthesis and extracellular secretion in HepG2 cells. These results indicate that among different ethanol fraction of mature and immature Rubus coreanus fruit extracts, water extract of immature fruit extract shows higher antioxidant as well as higher antihyperlipidaemic action.
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Kim HJ, Kim CH, Lim SW, Huh JW, Kim YJ, Kim HR. An extended medial to lateral approach to mobilize the splenic flexure during laparoscopic low anterior resection. Colorectal Dis 2013; 15:e93-8. [PMID: 23061515 DOI: 10.1111/codi.12056] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 08/11/2012] [Indexed: 12/23/2022]
Abstract
AIM The aim of this retrospective study of laparoscopic low anterior resection was to compare splenic flexure mobilization (SFM) carried out by an extended medial to lateral approach with that by a lateral approach. METHOD Records of patients with rectal cancer on a prospectively maintained database undergoing laparoscopic low anterior resection performed between January 2009 and November 2011 by a single surgeon were analysed. The extended medial to lateral approach involved continuing the medial to lateral approach upwards to enter the lesser sac over the pancreas, thus permitting detachment of the splenic flexure. RESULTS Two hundred and thirty-seven patients, including 164 undergoing a lateral SFM and 73 an extended medial to lateral SFM, were evaluated. Both patient groups had similar characteristics except for operative time (152.7 ± 32.7 min extended medial to lateral; 171.5 ± 40.8 min lateral; P < 0.001), postoperatively the interval to oral intake (3.1 ± 0.8 days extended medial to lateral; 3.7 ± 0.9 lateral; P < 0.001) and duration of hospital stay (8.2 ± 2.8 days extended medial to lateral; 10.3 ± 7.5 days lateral; P = 0.002) favoured the extended medial to lateral group. CONCLUSION An extended medial to lateral approach for SFM during laparoscopic low anterior resection of rectal cancer appears to be an improvement over the previously used lateral approach, because it may provide a shorter operation time and shorter hospital stay.
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Kim HR, Lee BS, Lee JE, Shin HI. Application of transanal irrigation for patients with spinal cord injury in South Korea: a 6-month follow-up study. Spinal Cord 2013; 51:389-94. [PMID: 23318554 DOI: 10.1038/sc.2012.171] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
STUDY DESIGN A 6-month follow-up study. OBJECTIVES To investigate the outcome of transanal irrigation (TAI) in patients with spinal cord injury (SCI) and to identify factors significantly related to clinical success. SETTING Survey for community-dwelling patients with SCI in South Korea. METHODS Between December 2010 and March 2012, TAI was initiated with 52 patients (41 men; age: 44.5±11.0 years) with neurogenic bowel dysfunction (NBD). At 1, 3 and 6 months after initiation, a telephone interview was conducted. Data were collected on patient-specific bowel management and TAI performance as a new procedure. RESULTS Only 18 patients (34%) used TAI for at least 6 months, which was a lower compliance rate than similar studies in some European countries. Relative to the compliant group, the noncompliant group contained a higher proportion of tetraplegia than paraplegia (P=0.031), and a higher proportion dependent on physical help (P=0.034). In all, 33 of the 52 patients (63.5%) complained of practical problems with the TAI procedure such as expulsion of the rectal catheter. Fifteen patients (28.8%) presented with adverse effects. The incidence of practical problems or adverse effects did not alter the frequency of patient-reported successful outcome. CONCLUSION Korean participants showed a relatively lower compliance rate with TAI. We conclude that TAI, combined with adequate patient instruction and physical assistance, has potential as a management tool for NBD in Korea.
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Kim HR. Anti-citrullinated protein antibodies in rheumatoid arthritis: a bridge between genetic predisposition and autoimmunity. Korean J Intern Med 2013; 28:25-8. [PMID: 23345993 PMCID: PMC3543957 DOI: 10.3904/kjim.2013.28.1.25] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2012] [Accepted: 11/17/2012] [Indexed: 12/12/2022] Open
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Kim HR. Phosphoinositide 3-kinase (PI3K) as a New Therapeutic Target for Rheumatoid Arthritis. JOURNAL OF RHEUMATIC DISEASES 2013. [DOI: 10.4078/jrd.2013.20.2.74] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Lee J, Kim HR, Lee SH, Kim HY. Epigenetic Modification in Systemic Rheumatic Diseases. JOURNAL OF RHEUMATIC DISEASES 2013. [DOI: 10.4078/jrd.2013.20.3.140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Lee JH, Choi ST, Kim JS, Yoon BY, Kwok SK, Kim HS, Kim YS, Song JS, Lee SH, Kim HR. Clinical characteristics and prognostic factors for relapse in patients with polymyalgia rheumatica (PMR). Rheumatol Int 2012. [DOI: 10.1007/s00296-012-2580-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ahn IE, Ju JH, Lee SY, Park JS, Oh HJ, Kim HR, Lee SH, Park SH, Kim HY, Cho ML. Upregulation of stromal cell-derived factor by IL-17 and IL-18 via a phosphatidylinositol 3-kinase-dependent pathway. Scand J Immunol 2012; 76:433-9. [PMID: 22690919 DOI: 10.1111/j.1365-3083.2012.02745.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Th17 cells that produce interleukin (IL)-17 play a key role in the pathogenesis of autoimmune inflammation. Among the various cytokines that are involved in the IL-17 pathway, members of the IL-1β family, including IL-18, have recently gained attention. In this study, we stimulated synovial fibroblasts with a combination of IL-17 and IL-18 and quantified their stromal cell-derived factor-1 (SDF-1) production by enzyme-linked immunosorbent assay and their transcript levels by reverse transcription-polymerase chain reaction. Both IL-17 and IL-18 significantly increased the level of SDF-1, not only individually but also synergistically (P< 0.05). The synergism was effectively suppressed by anti-IL-17 and -IL-18 antibodies, and a PI3K inhibitor. To the best of our knowledge, this is the first report of PI3K-dependent synergism between IL-18 and IL-17, and this work adds a novel perspective of the role of IL-18 in immune regulation. The individual effects of these two cytokines, and their interactions, suggest an interrelationship between the IL-1 family and IL-17.
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Huh JW, Jeong YY, Kim HR, Kim YJ. Prognostic value of preoperative radiological staging assessed by computed tomography in patients with nonmetastatic colon cancer. Ann Oncol 2012; 23:1198-1206. [PMID: 21948813 DOI: 10.1093/annonc/mdr404] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
PURPOSE This study evaluated the prognostic value of preoperative locoregional staging in patients with colon cancer and who underwent curative resection. METHODS A total of 536 consecutive patients who underwent curative resection for colon cancer from February 1999 to November 2007 were prospectively enrolled. The clinicopathological variables, including the radiological staging using computed tomography, were analyzed for the prognostic significance. RESULTS The 5-year overall survival rates of the patients with radiological T1, T2, T3, and T4 were 96%, 89%, 75%, and 79%, respectively (P = 0.028). The 5-year overall survival rates were 83%, 76%, and 54%, respectively, for patients with radiological N0, N1, and N2 disease (P < 0.001). The 5-year overall survival rates of the patients with radiological TNM (tumor-node-metastasis) stages I, II, and III were 90%, 81%, and 70%, respectively (P < 0.001) and the 5-year overall survival rates of the patients with pathological TNM stages I, II, and III were 93%, 80%, and 70%, respectively (P = 0.001). On multivariate analysis, the radiological T and N categories remained independent prognostic factors for both overall survival and disease-free survival. CONCLUSION Radiological staging is an independent predictor of long-term survival in the preoperative setting.
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Kim KW, Kim HR, Kim BM, Cho ML, Lee SH. VEGF induces RANKL in Rheumatoid Arthritis synovial fibroblasts. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.655.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kim KW, Kim HR, Park JY, Park JS, Oh HJ, Woo YJ, Park MK, Cho ML, Lee SH. Interleukin-22 promotes osteoclastogenesis in rheumatoid arthritis through induction of RANKL in human synovial fibroblasts. ARTHRITIS AND RHEUMATISM 2012; 64:1015-23. [PMID: 22034096 DOI: 10.1002/art.33446] [Citation(s) in RCA: 147] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVE To examine the regulatory role of interleukin-22 (IL-22) in the expression of RANKL and induction of osteoclastogenesis in rheumatoid arthritis (RA). METHODS Concentrations of IL-22 and RANKL in the serum and synovial fluid of RA patients were measured using enzyme-linked immunosorbent assay. RA synovial fibroblasts were treated with recombinant human IL-22 (rhIL-22), and the expression of RANKL messenger RNA (mRNA) and protein was measured using real-time polymerase chain reaction, Western blotting, and intracellular immunostaining. Human monocytes were cocultured with IL-22-prestimulated RA synovial fibroblasts and macrophage colony-stimulating factor, and osteoclastogenesis was assessed by counting the multinucleated cells (those staining positive for tartrate-resistant acid phosphatase). RESULTS The IL-22 concentration in the synovial fluid was higher in RA patients than in patients with osteoarthritis (OA). The serum IL-22 concentration was also higher in RA patients than in OA patients and healthy volunteers, and this correlated with serum titers of rheumatoid factor and anti-cyclic citrullinated peptide antibodies. In RA synovial fibroblasts treated with rhIL-22, the expression of RANKL mRNA and protein was increased in a dose-dependent manner. IL-22-induced RANKL expression was down-regulated significantly by the inhibition of p38 MAPK/NF-κB or JAK-2/STAT-3 signaling. In human monocytes cocultured with IL-22-prestimulated RA synovial fibroblasts in the absence of exogenous RANKL, the monocytes differentiated into osteoclasts, but this osteoclastogenesis decreased after p38 MAPK/NF-κB or JAK-2/STAT-3 signaling was inhibited. CONCLUSION These results show that IL-22 up-regulates RANKL expression in RA synovial fibroblasts and induces osteoclastogenesis. These effects are mediated by the p38 MAPK/NF-κB and JAK-2/STAT-3 signaling pathways.
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Kim KW, Kim HR, Kim BM, Cho ML, Lee SH. Stromal cell‐derived factor(SDF)‐1 induces RANKL in Rheumatoid Arthritis synovial fibroblasts and CD4+ T cells. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.655.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Suzuki M, Lee SJ, Kim HR. A longitudinal study on the preventive effects of dumbbell exercise and gum‐chewing training on the sarcopenia and dementia in old people in Korea (2009–2019). FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.627.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kim HR, Lee JH, Oh J, Kim NR, Lee SH. Clinical images: Detection of gouty arthritis in the atlantoaxial joint using dual-energy computed tomography. ACTA ACUST UNITED AC 2012; 64:1290. [DOI: 10.1002/art.34313] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Jung JY, Kang YA, Park MS, Oh YM, Park EC, Kim HR, Lee SD, Kim SK, Chang J, Kim YS. Chronic obstructive lung disease-related health care utilisation in Korean adults with obstructive lung disease. Int J Tuberc Lung Dis 2012; 15:824-9. [PMID: 21575306 DOI: 10.5588/ijtld.10.0432] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES The numbers of nationwide epidemiological surveys about chronic obstructive pulmonary disease (COPD) prevalence and prospective cohort studies for health care utilisation are limited. We investigated COPD-related health care utilisation in adults with obstructive lung disease in the second Korean National Health and Nutritional Survey (KNHANES II) in 2001 using Korean national medical insurance claim data. METHODS Among people aged >40 years, obstructive lung disease (OLD) is defined according to Global Initiative for Chronic Obstructive Lung Disease criteria. Data from a total of 1942 subjects were linked with Korean national medical insurance claims data, and we investigated their COPD-related out-patient visits from 2002 to 2005. RESULTS Among the 1942 subjects, 256 (13.2%) had airflow obstruction. COPD-related out-patient visits were reported for 8.2% of patients without airway obstruction, 18.1% of those with mild airway obstruction, and 33.9% of those with moderate to very severe airway obstruction. Multivariate analysis revealed that previous COPD diagnosis by a physician (OR 2.54; P = 0.02) and lower socio-economic status (OR 0.45; P = 0.02) were independent predictors of COPD-related out-patient visits in subjects with OLD. CONCLUSIONS Of the subjects with airway obstruction, those with poor financial status utilised COPD-related health care services less frequently, and those previously diagnosed as having COPD by a physician utilised the services more frequently.
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Park S, Kim HR, Bang H, Fujimori K, Kim BS, Kim SH, Kim IS. Fabrication and deodorizing efficiency of nanostructured core-sheath TiO2 nanofibers. J Appl Polym Sci 2012. [DOI: 10.1002/app.36499] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Hwang Y, Lee SH, Hong SC, Kim DY, Kim YJ, Seo JW, Son IS, Jung HA, Choi HS, Lee JH, Kim HR. A Case of Giant Cell Arteritis Accompanied by Acute Myeloid Leukemia. JOURNAL OF RHEUMATIC DISEASES 2012. [DOI: 10.4078/jrd.2012.19.4.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Moon SJ, Lee CH, Kim YS, Park YJ, Kang KY, Kwok SK, Kim HR, Ju JH, Kim HS, Seo YI, Choi ST, Choi JJ, Kim HA, Kim WU, Yoon CH, Hong YS, Lee MS, Lee SH, Song JS, Park W, Kim HY, Park SH. Usefulness and Limitation of 2010 ACR/EULAR Classification Criteria in Korean Patients with Early RA. JOURNAL OF RHEUMATIC DISEASES 2012. [DOI: 10.4078/jrd.2012.19.6.326] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kim SM, Park E, Lee JH, Lee SH, Kim HR. The clinical significance of anti-cyclic citrullinated peptide antibody in primary Sjögren syndrome. Rheumatol Int 2011; 32:3963-7. [DOI: 10.1007/s00296-011-2274-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Accepted: 12/08/2011] [Indexed: 11/24/2022]
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Sung YK, Cho SK, Choi CB, Park SY, Shim J, Ahn JK, Bang SY, Cha HS, Choe JY, Chung WT, Her M, Hong SJ, Hong YK, Joung CI, Jun JB, Jung YO, Kang YM, Kim DY, Kim HR, Kim HA, Kim J, Kim SK, Kim SI, Kim TH, Kim TJ, Koh E, Lee CK, Lee HS, Lee J, Lee SH, Lee SH, Lee SS, Lee SW, Lee YA, Nah SS, Park SH, Sheen DH, Shim SC, Gyu Song G, Suh CH, Uhm WS, Yoo DH, Yoo WH, Yoon BY, Bae SC. Korean Observational Study Network for Arthritis (KORONA): establishment of a prospective multicenter cohort for rheumatoid arthritis in South Korea. Semin Arthritis Rheum 2011; 41:745-51. [PMID: 22154221 DOI: 10.1016/j.semarthrit.2011.09.007] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Revised: 09/21/2011] [Accepted: 09/23/2011] [Indexed: 10/14/2022]
Abstract
OBJECTIVES The object of this study was to introduce the KORean Observational study Network for Arthritis (KORONA) registry with an emphasis on the design of the Korean rheumatoid arthritis (RA) national database, as well as to provide an overview of the RA patients who are currently registered in KORONA. METHODS The KORONA was established in July 2009 by the Clinical Research Center for Rheumatoid Arthritis (CRCRA) in South Korea. KORONA is based on a prospective protocol and standard, defined data collection instruments. Demographic and clinical features, laboratory and radiologic data, health-related outcomes, treatment side effects, resource utilization, and health behaviors of the RA cohort patients are recorded in a database. RESULTS A total of 23 institutions, which are about 38% of the rheumatologic departments at tertiary academic hospitals across South Korea, are part of KORONA. The quality control of data collection and management has been performed through annual monitoring and auditing, staff training, and providing standard operation protocol by the executive committee of CRCRA. As of 31 December 2010, 4721 patients with established RA were included in KORONA, because an annual survey had started to be performed in July 2010. CONCLUSIONS KORONA is the first nationwide Korean RA-specific cohort and it will provide valuable "real-world" information for Korean RA patients.
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Lee MY, Oh SH, Kim HR, Park N, Jun JH. Identification of a novel HLA-B allele, B*35:01:25, by sequence-based typing in a Korean individual. TISSUE ANTIGENS 2011; 78:400-401. [PMID: 21707544 DOI: 10.1111/j.1399-0039.2011.01726.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The new allele B*35:01:25 showed a single nucleotide substitution compared with B*35:01:01 at codon 238 (GAT/GAC).
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Heo YJ, Oh HJ, Jung YO, Cho ML, Lee SY, Yu JG, Park MK, Kim HR, Lee SH, Park SH, Kim HY. The expression of the receptor for advanced glycation end-products (RAGE) in RA-FLS is induced by IL-17 via Act-1. Arthritis Res Ther 2011; 13:R113. [PMID: 21749686 PMCID: PMC3239351 DOI: 10.1186/ar3398] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Revised: 05/03/2011] [Accepted: 07/12/2011] [Indexed: 12/20/2022] Open
Abstract
Introduction The receptor for advanced glycation end-products (RAGE) has been implicated in the pathogenesis of arthritis. We conducted this study to determine the effect of interleukin (IL)-17 on the expression and production of RAGE in fibroblast-like synoviocytes (FLS) from patients with rheumatoid arthritis (RA). The role of nuclear factor-κB (NF-κB) activator 1 (Act1) in IL-17-induced RAGE expression in RA-FLS was also evaluated. Methods RAGE expression in synovial tissues was assessed by immunohistochemical staining. RAGE mRNA production was determined by real-time polymerase chain reaction. Act-1 short hairpin RNA (shRNA) was produced and treated to evaluate the role of Act-1 on RAGE production. Results RAGE, IL-17, and Act-1 expression increased in RA synovium compared to osteoarthritis synovium. RAGE expression and production increased by IL-17 and IL-1β (*P <0.05 vs. untreated cells) treatment but not by tumor necrosis factor (TNF)-α in RA-FLS. The combined stimuli of both IL-17 and IL-1β significantly increased RAGE production compared to a single stimulus with IL-17 or IL-1β alone (P <0.05 vs. 10 ng/ml IL-17). Act-1 shRNA added to the RA-FLS culture supernatant completely suppressed the enhanced production of RAGE induced by IL-17. Conclusions RAGE was overexpressed in RA synovial tissues, and RAGE production was stimulated by IL-17 and IL-1β. Act-1 contributed to the stimulatory effect of IL-17 on RAGE production, suggesting a possible inhibitory target for RA treatment.
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Lee SH, Kim KW, Kim HR, Seo YI. IL-22 promotes osteoclastogenesis in rheumatoid arthritis through induction of RANKL from synovial fibroblasts (117.25). THE JOURNAL OF IMMUNOLOGY 2011. [DOI: 10.4049/jimmunol.186.supp.117.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
This study aims to determine the regulatory role of interleukin(IL)-22 on the expression of receptor activator of NF-kB ligand(RANKL) and the induction of osteoclastogenesis in rheumatoid arthritis(RA). The concentrations of IL-22 and RANKL in sera and synovial fluids(SF)of RA patients were measured by ELISA. After RA synovial fibroblasts were treated with rhIL-22, the expression of RANKL mRNA and protein was determined using real-time PCR,western blot,and immunostaining.Human monocytes were cocultured with IL-22-prestimulated RA synovial fibroblasts and monocyte-colony stimulating factor(M-CSF), and then osteoclastogenesis was determined by counting of TRAP-positive multinucleated cells. Serum and SF IL-22 concentration in RA patients was higher than in osteoarthritis patients and healthy subjects. When RA synovial fibroblasts were treated with rhIL-22, the expression of RANKL mRNA and protein was upregulated in a dose-dependent manner. The IL-22-induced RANKL expression was significantly down-regulated by inhibition of p38 MAPK/NF-kB and JAK-2/STAT3. When human monocytes were cultured with IL-22-prestimulated RA synovial fibroblasts in the absence of RANKL, the monocytes were differentiated into osteoclasts, which was blocked by the inhibition of p38 MAPK/NF-kB and JAK-2/STAT3.Our results suggest that IL-22 up-reugulates RANKL expression in RA synovial fibroblasts and it also promotes osteoclastogenesis, which are mediated by p38 MAPK/NF-kB and JAK-2/STAT3 pathways.
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Kim HR, Kim KW, Jung HG, Yoon KS, Oh HJ, Cho ML, Lee SH. Macrophage migration inhibitory factor enhances osteoclastogenesis through upregulation of RANKL expression from fibroblast-like synoviocytes in patients with rheumatoid arthritis. Arthritis Res Ther 2011; 13:R43. [PMID: 21401926 PMCID: PMC3132025 DOI: 10.1186/ar3279] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Revised: 02/09/2011] [Accepted: 03/14/2011] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION Macrophage migration inhibitory factor (MIF) is one of key regulators in acute and chronic immune-inflammatory conditions including rheumatoid arthritis (RA). We examined the effect of MIF on osteoclastogenesis, which is known to play a crucial role in bone destruction in RA. METHODS The concentration of MIF and receptor activator of nuclear factor-κB ligand (RANKL) in the synovial fluid was measured by ELISA. MIF-induced RANKL expression of RA synovial fibroblasts was determined by real-time PCR and western blot. Osteoclastogenesis was analyzed in culture of human peripheral blood mononuclear cells (PBMC) with MIF. Osteoclastogenesis was also determined after co-cultures of rhMIF-stimulated RA synovial fibroblasts with human PBMC. RESULTS Synovial fluid MIF concentration in RA patients was significantly higher than in osteoarthritis (OA) patients. The concentration of RANKL correlated with that of MIF in RA synovial fluids (r = 0.6, P < 0.001). MIF stimulated the expression of RANKL mRNA and protein in RA synovial fibroblasts, which was partially reduced by blocking of interleukin (IL)-1β. Osteoclasts were differentiated from PBMC cultures with MIF and M-CSF, even without RANKL. Osteoclastogenesis was increased after co-culture of MIF-stimulated RA synovial fibroblasts with PBMC and this effect was diminished by RANKL neutralization. Blocking of PI3 kinase, p38 MAP kinase, JAK-2, NF-κB, and AP-1 also led to a marked reduction in RANKL expression and osteoclastogenesis. CONCLUSIONS The interactions among MIF, synovial fibroblasts, osteoclasts, RANKL, and IL-1β have a close connection in osteoclastogenesis and they could be a potential gateway leading to new therapeutic approaches in treating bone destruction in RA.
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Abstract
Tailgut cysts, or retrorectal cystic hamartomas, are rare congenital developmental lesions, most commonly located in the retrorectal space, and are more common in women. We present a case of retrorectal tailgut cyst managed using a laparoscopic approach. A 36-year-old woman presented with incidentally detected retrorectal tumors during evaluation for a gallbladder polyp. Her past medical history revealed that she had undergone cesarean section twice. The tumor marker CA 19-9 level was 42.52 U/ml. CT of the pelvis with contrast and pelvic MRI revealed a 3.9 × 3.3 cm well-defined, homogeneous cystic mass in the right presacral area, and a 2.5 × 1.5 cm cystic mass in the precoccygeal space. The patient underwent laparoscopic exploration with a preoperative diagnosis of tailgut cysts based on radiological findings. The operative time was 90 min including 30 min of subsequent laparoscopic cholecystectomy without placement of additional trocars. The surgical specimens consisted of two fragments of fibrofatty tissues, unilocular cystic masses. The final pathologic diagnosis was tailgut cysts with no evidence of malignancy. Postoperative recovery was uneventful, and the patient was discharged after 3 days. In conclusion, surgical resection is recommended in the management of retrorectal tailgut cyst to establish a definite diagnosis and to rule out malignancy. The laparoscopic approach is a feasible and safe option.
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